A good method of discovery is to imagine certain members of a system removed and then see how what is left would behave: for example, where would we be if iron were absent from the world: this is an old example.

I believe that man is in the last resort so free a being that his right to be what he believes himself to be cannot be contested.

If you are going to build something in the air it is always better to build castles than houses of cards.

Everyone should study at least enough philosophy and belles-lettres to make his sexual experience more delectable.

If all else fails, the character of a man can be recognized by nothing so surely as by a jest which he takes badly.

As the few adepts in such things well know, universal morality is to be found in little everyday penny-events just as much as in great ones. There is so much goodness and ingenuity in a raindrop that an apothecary wouldn't let it go for less than half-a-crown.

Much can be inferred about a man from his mistress: in her one beholds his weaknesses and his dreams.